Flames and smoke were sent shooting into the sky after an initial explosion from the basement of 121 Second Avenue around 3:15 p.m. Thursday. The fire jumped to adjacent buildings, causing three to collapse. A fourth suffered extensive fire damage.

Locon was working as a busboy at Sushi Park when the explosion destroyed the entire building.

Alfredo Locon said they first learned about the blast from a waitress at the restaurant around 9 p.m.

“She says my brother was in the in the restaurant,” he said.

The family then went to the blast site and nearby hospitals but none had any record of him.

Macedo asked his younger brother in Spanish how he felt about his brother being unaccounted for. He said he feels devastated at his brothers disappearance but still can’t imagine that he might be not be alive.

Nicholas Figueroa’s family said he and his date were paying for their meal at the time of the blast.

Investigators did a thorough search of the building, but sources told CBS2 they found no signs of him. His siblings keep calling his cell phone, but it goes straight to voice mail.

Family Desperate To Find Missing Man Following East Village Blast

“My brother is a strong guy,” his brother Neal Figueroa told WCBS 880’s Peter Haskell. “I just want my brother to be safe, I want him to smile again. I want him to be home.”

“I’m just really worried he’s going to remain missing and no one is going to truly find where he is,” Brandon Figueroa said. “I want to have that confidence, but there are so many factors that go against it.”

Earlier, authorities said they were trying to determine if six others who were reported missing were connected to the blast. Chief of Detectives Robert Boyce said Friday that list has now been narrowed down to one.

It’s still early in the investigation, but city officials believe it was a gas-related explosion.

Con Edison inspectors were at 121 Second Avenue before the blast looking at the installation of a new gas meter and pipes, work the utility said was being done by a private contractor.

But Con Ed said it failed the inspection partly because the space for a new meter wasn’t big enough.